Shoe bottom unit and method of making the same



March `9, v 1937. I w. w. PRUE 2,073,025

SHOE BOTTOM UNIT AND METHOD OF MAKING THE SAME Filed July 2o. 193s wlmmPatented Mar.' 9, 1937 UNITED STATES PATENTv OFFICE I SHOE BO'r'roM UNITAND ME'rnon or MAxxNG 'ma SAME Application July 20, 1933, Serial No.681,331

22 Claims.

This invention relates to improved methods of making shoes and shoebottom units and to improvements in shoes and shoe bottom units asarticles of manufacture.

In United States Letters Patent No. 2,055,542, granted September 29,1936, upon application of Karl Kilburn, and No. 2,065,463, grantedDecember 22, 1936, upon application of John M. Whelton, there aredisclosed and claimed certain improvements in shoe bottom constructionand improved methods of making shoe bottom unitsa purpose of which is tofacilitate the lasting of the upper and the laying of the outsole so asaccurately to reproduce the lines of the last in the shank portion ofthe shoe.

Among other objects the present invention is concerned with furtherfacilitating the attainment of the above results.

With this object in view the present invention, considered in oneaspect, provides an improved method of making shoe bottom units which'comprises assembling an unmolded insole memberI and a shank reinforcingpiece with adhesive between the parts, said reinforcing piece havingbeen previously arched both lengthwise and crosswise to conform to thebottom contour of the shank portion of a'last, and applying pressure tosaid parts to shape the shank portion of the insole member to conformtothe lengthwise and crosswise curvatures of the shank-reinforcing pieceand consequently of the last bottom and to secure said parts together ina manner permanently to retain the shape imparted to the insole member.As herein illustrated, the insole member is a full length insole whichmay be made of leather or a suitable leather substitute soling material.The illustrated reinforcing piece,

whichrmay be made of leatherboard, fiber or like material, is adapted toreinforce the heel as well as the shank portion of theinsole and is cutto correspond in outline to those portions of the insole. Thereinforcing piece is preferably molded before assembly with the insoleto conform to the bottom contourof the heel and shank portions of alastand, as illustrated, the reinforcing piece is secured to the upper (i.e., the last-engaging) surface of the insole, and a metallic shankstiifener is interposed between the reinforcing piece and the insole tomaintain permanently the longitudinal curvature of the latter, the shankstiffener preferably being attached to the reinforcing piece before thelatter is secured to the insole. The adhesive which is employed betweenthe reinforcing piece and the insole is caused to unite those partsthrough (ci. srt-1s) pressure exerted by the hands of the workman whoassembles the parts and, in order to insure that the parts shall befirmly secured together, one or more fastenings, illustrated as wirestaples, may be driven through the shank portions of the insole and thereinforcing piece at opposite sides of the 'shank stiifener. Thesestaples hold the marginal portions of the insole and the reinforcingpiece securely together, the pressure applied to the assembled parts bythe staple inserting instrumentalities supplementing the manuallyapplied pressure to insure an even more effective adhesiver attachmentof the parts in the shank portion of the insole unit. Preferably, and asillustrated, the metal shank stiifener is formed with a longitudinal ribor ridge which functions initially to produce a correspondinglongitudinal ridge in the shank portion of the insole, the staplescooperating with the shank stiifener permanently to retain the ridgeformation of the insole so that later, after the upper has been lastedand the outsole attached, the pressure applied to the outsole in theleveling operation will produce a corresponding ridged formation in theshank portion of the outsole of the shoe. It will be seen that, inaccordance with the abovedescribed method of making a reinforced shoebottom unit, the heel and shank portions of the unit will be shaped toconform to the bottom contour of the heel and shank portions of the lastbefore theunit is applied to the last and without placing the unit in amold or on a form and without subjecting it to heavy molding pressure.For the purpose of insuring against breaking down of the longitudinalarch of the insole unit while the shoe is being worn, provision is made,as herein illustrated, for enabling a fastener, such as a rivet, to beinserted through the outsole and through the shoe bottom unit in theforward portion of the shank of the shoe. To this end, as herein shown,a fastener-receiving aperture is provided in the forward portion of theshank stiffener and a corresponding aperture registering with the formeris provided in the heel and shank reinforcing member. f

In -the manufacture of a shoe in which the above-described reinforcedinsole unit is employed as herein exemplified, the unit, after beingassembled and shaped as already described. is secured to thebottom'of alast, an upper is pulled over and lasted to the insole, an outsole islaid, and the other usual operations are performed to complete themaking of theshoe. Thereafter, the last is pulled and the rivet or otherfastener is driven inwardly through the outsole and the insole andthrough the apertures in the shank stiil'ener and reinforcing piece andthe inner end of the rivet is clenched against the inner face of'thereinforcing piece, thus rigs idly securing all these parts together ina, manner permanently to retain the longitudinal arch of the shoebottom.

The invention further resides in improvements in shoes and in reinforcedshoe bottom units resulting from the practice of the methods aboveoutlined.

'Ihe invention will be explained with reference to the accompanyingdrawing, in which 'Fig. 1 is a perspective view of a reinforcing l5piece constituting one of the elements of my improved reinforced shoebottom unit;

Fig. 2 is. a perspective view of the reinforcing piece showing a, shankstiifener attached thereto; Fig. 3 is a perspective view of a completedshoe bottom unit embodying my invention, showing the upper side of theunit;

Fig. 4 is a perspective view of the unit show- `ing the lower 'oroutsole-engaging side of the unit;

Fig. 5 is a longitudinal sectional view of-a shoe havingmy improved shoe.bottom unit incorporated therein; and

Fig. 6 is a sectional view taken along the line V'I-VI of Fig. 3.

'I'he improved shoe bottom or insole unit shown in the drawing comprisesJa full length insole I0, a reinforcing piece I2 for the heel and shankportions of the insole, and a shank stiffener Il. The insole I0 may bemade of leather or any suitable leather substitute solin'g material andis cut to the required shape and size in any suitable manner as. forexample, by a rounding or dieing-'out operation. The reinforcing membermay be made of stiii' leather or iibreboard and is shaped to correspondsubstantially to the contour of the heel and shank portions of theinsole. The shank stiifener Il is preferably made of metal and provided,as shown in Fig. 2. with a longitudinal sti'ifening rib or ridge I6. Foruse in shoes of dierent sizes it is, of course. necessary to cut theinsoles in sizes to correspond with the sizes of the shoes. It isunnecessary, however, to provide a complete run o'f sizes of thereinforcing pieces on account of the relatively small change in shape inthe heel and shank portions of an insole resulting from changes in .sizeof the insole. Accordingly, it is practicable to employ a single sizeofreinforcing piece for a run of several sizes of insoles, it beingnecessary to provide only three or four sizes of reinforcing pieces foruse with a lot of insoles comprising an entire run of sizes. Thus, byselecting a reinforcing piece of a size appropriate for use with aninsole of a given size the reinforcing piece @o will correspond asclosely as is necessary to the shape of the heel and shank portions ofthe insole.

As indicated at I8 in Fig. 2, the forward portion of the reinforcingpiece I2 is beveled, thereg5 by reducing its thickness so that it willconform readily to the abrupt break in the longitudinal curvature of thelast bottom at the Junction of the shank and forepart thereof andproducing a feather edge which will have no tendency to form anobjectionable ridge in the insole. Preferably, the lateral edges of thereinforcing piece I2 are also beveled, as best shown at 20 in Fig. 6, tofacilitate smooth lasting of the shoe upper over the edges of the insoleunit in the shank portion of the shoe. As shown in Fig. 6, the shankportion of the insole I0 is cut somewhat narrower than the correspondingportion of the re- A inforcing piece so that the edges of that portionof the insole will have no tendency to hold the upper away from thesides of the last or to in- 5 terfere with the smooth lasting abovereferred to. As shown, also, the shank stiiener I4 is attached by meansof tacks 22 to the reinforcing piece. The front end of the shankstiiener is located some distance rearwardly from the front 10 end ofthe reinforcing piece I2 so that when the insole unit is incorporated ina shoe the front end of the shank stiii'ener will be spaced rear- Wardlyfrom the break line of the shoe and thus the stiffener will have notendency to dig into l5 the outsole as the shoe is being `worn. Thereinforcing piece I2, before being assembled with the insole, is moldedto conform to the bottom contour of the heel and shank portions of thelast for the shoe in which the insole unit is to 20 be incorporated, thereinforcing piece, as shown. being arched both longitudinally andtransversely to lt the correspondingly arched por*- tions of the lastbottom. Preferably, also, the shank stiffener Il is provided near its:frontl end 25 with an aperture 24 and a similar aperture 26 is providedin the reinforcing piece I2 in registry with the aperture 24, theregistering apertures 2l and 26 being adapted to receive a fastening,such as the rivet shown at 28 in Fig. 5, for use 30 in securing theshank portion of the insole unit to the outsole of the shoe. Thereinforcing piece I2, with theshank stiffener Il attached thereto,

is secured to the insole III by means of suitable adhesive, such asrubber latex, and in addition 35 by means of fastenings, such as wirestaples/ 3l), the staples, as herein shown, being employed only in theshank portion of the insole unit and being located at opposite sides ofthe shank stiffener. The shank and heel portions of the illus- 40 tratedinsole conform to the molded contour of the reinforcing piece I2 exceptin the vicinity of the median line of the shank where the rib or ridgeI6 of the shank stiil'ener forms a corresponding ridge 32 (Fig. 4)in,the insole, the 45 shank stiifener and the staples 30 cooperating toretain permanently this ridged formation in the insole so that duringthe manufacture of a shoe in which the reinforced insole is incorporatedthe pressure to which the outsole is sub- 50 Jected during the levelingoperation will result in forming a corresponding ridge or so-calledcottage-roof formation in the outsole.

In the manufacture of the above-described reinforced insole unit thereinforcing piece may be 55 died out, its front and lateral edges may bebeveled, a longitudinally arched shank stiifener may be assembledtherewith and secured thereto, and the reinforcing piece may be moldedin substantially the same manner as that customarily prac-y 30 ticed inthe manufacture of shank stiileners for turn shoes. If desired, therivet-receiving apertures in the reinforcing piece and inthe shankstiffener may be' formed therein during the dieing or blanking out ofthose parts, in which case the 05 aperture in the reinforcing piece willbe alined with the aperture in the shank stiifener during the assemblingof the parts and thus will serve as a means for gaging the longitudinalrelation of the parts. It may be found convenient, however, 70 toformthe aperture in the reinforcing member by punching or drillingthrough the aperture in the shank stii'fener after the shank stiienerhas been attached to the reinforcing piece.

Before the reinforcing piece I2 is assembled 75 with the insole 0 acoating of adhesive, for ex- Athemto adhere to each other.

ample rubber latex. is applied to `one or both of these parts.Conveniently the reinforcing piece may be dipped in a container of latexand. the latex may be 'applied to one side of the heel and shank portionof the insole by drawing the latter across a roll which is partiallysubmerged in latex. 'I'he reinforcing member and the insolel may bereadily assembled manually, the operative using his fingers to aline therear and lateral edges of the parts and to press them together to causeAfter the reinforcing piece and the insole have been thus assembled thestaples 30 or other fastenings are driven through the lateral margins ofthe shankV `of staplesbe driven in a manner firmly to secure togetherthe marginal portions of thereinforcing piece and the insole but themachine operates also `to clamp the work in the region' where thestaples are inserted with a substantial amount of pressure and thisclamping pressure is eifective to insure that a satisfactory bond willbe obtained between the adhesive-coated parts in the immediate vicinityof the clamping instrumentalities. If, as herein shown, no staples orsimilar fastenings are employed in the heel portions of the insole andthe reinforcing piece, the heel portions of those parts will beadequately secured together by the pressure of the operators handsduring the assembling and subsequent handling of the parts and by thepressure to which the parts are subjected during subsequent shoemakingoperations. Advantageously the staples may be driven into the outersurface f of the reinforcing piece and clenched against theoutsole-engaging surface'of the insole since this versely arched shankstiffener is employed since the insertion of the staples assists inbending the insole about the shank stiiener. After being inserted thestaples serve in conjunction with the shank stiffener to retain theinsole in its transversely bent or ridged condition.

In accordance with the above-described method a reinforced shoe bottomor insole unit may be produced the heel and shank lportions of which areshaped to conform to the bottom contour of the heel and shank portionsof a last before being applied to the last and without placing theinsole unit in a mold or upon a form and subjecting it to heavy moldingpressure, the only molding operation being that carried out inconnectionwith the initial shaping of the reinforcing piece. If desired,however, this initial shaping or molding of the reinforcing piece may bedispensed with and, after the reinforcing piece and the insole have beenassembled and secured together, the insole unit thus produced may bemolded between suitably shaped mold members in a molding machine, such,for example, as the sole molding machine disclosed in United StatesLetters Patent No.

1,003,971, granted September 26, 1911, upon application of A. A. Ball,Jr. f

After the reinforcing piece has been attached to the insole and theinsole has been shaped in its shank portion as above described, theresulting insole or shoe bottom unit is laid upon the bottom of a lastand held in placel thereon by tacks driven into the last bottom in theusual way, the unit fitting the last as a result of the shapingoperations already described and in spite of the fact that the insolehas not been subjected to any actual molding operations such as haveheretofore been used to impart thedesired shape to the insole. f- Y Inthe making of a shoe upon the last fitted with my improved reinforcedinsole unit, an upper is pulled over the last and secured in lastedrelation to the insole, an outsole is laid and secured to the shoebottom, and a heel is attached, all in accordance with any well-known orsuitable practice. Such a shoe is illustrated in Fig. 5, the shoecomprising, in addition to the improved insole unit, an upper 34, anoutsole 36 attached by cement to the shoe bottom, and a heel 38, securedin place by heel-attaching nails 40. It is to be noted that a shoeembodying the hereindescribed reinforced insole or bottom unit isparticularly adapted to have its outsole secured by means of cement,inasmuch as there is no metal at the lower side of the insole tointerfere with the bond between the outsole and the shoe bottom in theshank portion ofthe latter,'though obviously the outsole may be attachedby stitching if preferred.

In order to provide for more irmly and adequately stiffening the shankportion of the shoe and overcoming any tendency of the longitudinal archof the shoe to break down under the weight of the wearer, it ispreferred to secure the reinforcing piece, the shank stitfener, and theinner and outer soles together at the forward portion of the shank ofthe shoe by means of a strong fastening, such as the rivet 2B alreadyreferred to. In practice it has been found lunnecessary to providerivet-receiving apertures in the insole I0 or in the outsole prior tothe driving of the rivet. 'I'he rivet may be driven by the use, forexample, of a rivet-driving device of the type wherein a positioning pinassociated with one member of a rivet-setting couple is adapted to enterthe apertures in the shank stiffener and reinforcing piece and toposition those parts with the apertures thereinv in line with a rivetheld in position to be driven by the other member of the rivet-settingcouple. A rivet-driving device of this general nature is disclosed inUnited States Letters Patent No. 1,829,787, granted November 3, 1931,upon application of J. F. Crowley. In the use of a rivet-driving deviceof this nature the rivet will be caused to force its way through thepreviously unperforated outer and inner soles of the sh and thereafterto pass through the alined apertures in the shank stiffener andreinforcing piece. Finally, the rivet will be set by having its innerend clenched against the inner surface of the `reinforcing member. Ifdesired, the use of a rivet-driving device such as that above referredto may be dispensed with by the expedient of inserting a drill, punch orother hole-forming tool in the apertures 24 and-.2G in the shankstifiener and reinforcing piece, respectively, and operating the .toolto form holes through the insole and outsole of the shoe in line withthe apertures in the shank stiienerv and reinforcing piece, after whicha rivet may be passed through the holes in the various shoe bottom partsmentioned and set without the use of the special rivet-driving mechanismreferred to. The use of the rivet or 5 other fastener, as described,insures that the members employed for reinforcing and stiening the shankportion of the shoe bottom will be firmly secured together in such amanner as to maintain the longitudinal arch of the shoe bottom lthroughout the life of the shoe.

In'cases whereM an insole or bottom unit con- I attaching nails or theclenched-over inner end of 25 the rivet 2l to be pulled outwardlythrough the reinforcing piece I2, whereas experience has shown that thematerials commonly employed as substitutes for leather will notsatisfactorily resist the strains to which the heel-attaching nails 30are subjected in the wearing of a shoe.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

l. That improvement in methods of making 35 reinforced shoe bottom unitswhich consists in assembling an unmolded insole member and ashank-reinforcing, piece with adhesive between said parts, saidreinforcing piece havingbeen previously arched both lengthwise andcrosswise 40 to conform to the bottom contour of the shank portion of alast, and applying pressure to said parts to shape the shank portion ofthe insole member to conform to the lengthwise and cross' wisecurvatures of the shank-reinforcing piece 45 and consequently ofthe lastbottom and to secure said parts together in a manner permanently toretain the shape imparted to the insole member. 2. That improvement inmethods of making reinforced shoe bottom units which consists in 60assembling a heel and shank reinforcing piece and an unmolded insolewith adhesive between said parts. said reinforcing piece being molded`-65 sembling a reinforcing piece previously molded to conform to the.bottom contour of the shank portion of a last and an unmolded insolewith l,n.,clhesivebetween said parts, and inserting fastenings throughone of said parts into the other,

` 70 thereby causing the adhesive andthe fastenings to secure said partsfirmly together and conforming the shank portion of the insole to therein forcing piece. y g 4. That improvement in methods of making 75reinforced shoe bottom umts which consists in assembling a heel andshank-reinforcing piece and an unmolded insole with adhesive betweensaid parts. the reinforcing piee having been previously molded toconform to the bottom contour of the heel and shank portions of a lastand having a shank stiil'ener attached to its insole-engaging side, andinserting fastenings through the lateral marginal portion of one of saidparts into the other, thereby causing the adhesive and the.

fastenings to secure said parts firmly together and conforming theshankv portion of the insole to the reinforcing piece.

5. 'I'hat improvement in methods of making reinforced shoe bottom unitswhich consists in applying adhesive to the heel and shank portions of af'lat insole and to a heel and shank-reinforcing piece previously moldedto conform to the bottom contour of the heel and shank portions of alast, laying the said reinforcing ,piece in correct I of the insole andthe reinforcing member at oppoi site sides of the shank`- stiiener,thereby causing said parts to be firmly secured together by saidfastenings and by the adhesive, and conforming the shank portion of theinsole to the reinforcing piece.

'l. That improvement in methods of making reinforced shoe bottom unitswhich consists in assembling a heel and shank-reinforcing piece and anunmolded insole with adhesive ,between said parts. the reinforcing piecehaving been previously shaped to conform to the bottom contour of theheel and shank portions of a last and having attached toitsinsole-engaging 'side a longitudinally arched shank stlifener having alongitudinal ridge' at the insole-engaging side of the reinforcingpiece, and inserting fastenings in the lateral margins of the shankportionsof the reinforcing member and the insole, thereby causing theadhesive and the fastenings to secure said parts firmly together andconforming the shank portion of the insole to the longitudinal curvatureof the reinforcing piece and forming in the shank portion of the insolea longitudinal ridge corresponding to that of the shank stifiener.

8. That improvement in methods of making reinforced shoe bottom unitswhich consists in assembling a heel and shank reinforcing piece and anunmolded'insole with adhesive between said parts, the reinforcing piecehaving attached` to its insole-engaging side a longitudinally andtransversely arched shank stiflener, pressing the sole to the transversecurvature of said shank' stinener.

9. That improvement in methods of making shoes which consists inassembling an unmolded insole and a heel and ,shank-reinforcing piecelwith adhesive between said parts. the reinforcing piece having beenpreviously molded to conform to the longitudinal and transverse'curvatures of the bottom of the heel and shank portions of a last andhaving a shank stiffener attached to its insole-engaging side, applyingpressure to said parts, thereby securing the insole to the reinforcingpiece and shaping the shank portion of the .insole to conform to theshank portion of the reinforcing piece, applying the insole unit thusproduced to the bottom of a last, lasting an upper to .the insole, andattaching an outsole and a heel to the shoe.

10. "That improvement in methods of making shoes which consists inapplying to the bottom of I a. last a shoe bottom u nit comprising aninsole member, a heel and shank-reinforcing piece having 'afastener-receiving aperture therein and a shank stiifener having afastener-receiving aperture registering with the aperture in saidreinforcing piece, lasting an upper to said shoe bottom unit, attachingan outsole and a heel tothe shoe, pulling the last, and inserting afastener through the outsole and the insole member and through theregistering apertures in the shank stiffener and reinforcing piece tosecure together the outsole, insole, shank stiifener and reinforcingpiece. 11. That improvement in methods of making shoes which consists insecuring to the heel and shank portions of a flat insole alongitudinally. and transversely curved reinforcing piece having arivet-receiving aperture therein, and a shank stiener having arivet-receiving aperture registering with the aperture in thereinforcing piece and thereby imparting longitudinal and` transversecurvatures to said insole and producing a shoe bottom unit, applying theshoe bottom unit thus produced to the bottom of a last, lasting an upperto, said unit, attaching an outsole and a heel to the shoe, pulling thelast, driving a rivet 40 inwardly through the outsole and through theregistering apertures in the shank stiifener and reinforcing member, andclenching the inner end of therivet against the inner surface of thereinforcing member rigidly to secure together the outsole, the insole,the'shank stiil'ener and the reinforcing member. j

12. A reinforced shoe bottom unit comprising an innersole member havinga longitudinally arched shank portion, a reinforcing piece for the .60shank portion of. the innersole member secured to the latter, and ashank stiifener interposed between the reinforcing piece and theinnersole member yand directly secured to the reinforcing piece, theshankstiifener having an open rivetreceiving aperture therein and thereinforcing /member having an open rivet-receiving aperture `thereinregistering with the aperture in the shankK stiffener.

13. A reinforced shoe bottom unit comprising an innersole having alongitudinally and transversely arched shank portion, a reinforcingmember for the hee] and shank portions of the innersole, a ribbed shankstiiener interposed between the-reinforcing member and the innersole andimparting a corresponding ribbed contour to said innersole, and a seriesof staples securing together the marginal, portions of the innersoleandthe reinforcing member at the shank portion of the innersole, thestaples being set inwardly from the edge of said parts so as to preservethe ribbed contour of the innersole.

14. A reinforced shoe bottom unit comprising an innersole, a reinforcingpiece secured to the.

heel and shank portions of the innersole, each of said parts beingarched longitudinally and transversely and the innersolebeing archedtransversely to a greater extent than the reinforcing piece, alongitudinally arched shank stiffener interposed between the innersoleand the reinforcing piece, and fastenings securing together 5 themarginal portions of the innersole and the reinforcing piece along theopposite edges oi the shank stiifener and cooperating with the shankstiffener to retain the transverse arch of the innersole. 10 15. Areinforced shoe bottom unit comprising a longitudinally and transverselyarched heel and shank reinforcing piece, a shank stiifener secured tothe reinforcing piece, and an insole secured to the reinforcing piece atthe side of the latter l5 to which the shank stiifener is secured, theinsole being transversely arched to a substantially greater extent thansaid reinforcing piece.

16. A reinforced shoe bottom unit comprising an innersole member, a.heel and shank reinforc- 20 ing piece secured byA adhesive to saidinnersole member, a ribbed shank stifl'ener interposed between saidparts, said innersole member conforming to the ribbed contour of saidshank stiifener, and fastening devices located at opposite sides 25 ofand in close proximity to said shank stiifener, said devices securingthe lateral marginal portions of the innersole member and thereinforcing piece together so as to preserve the ribbed contour or chelatter. 30

17. A reinforced shoe bottom unit comprising an innersole, a heel andshank-reinforcing piece secured to the innersole, and a shank stiffenerinterposed between said parts, said stiifener having a longitudinalridge imparting a correspond- 35 ing ridged formation to the innersole.

18. A reinforced shoe bottom unit comprising an innersole having alongitudinally arched shank portion, a longitudinally arched reinforcingpiece for the heel and shank portions of the innersole, 40 and alongitudinally arched shank stiifener inter posed between'saidparts,rsaid stiffener having a longitudinal ridge at itsinnersole-engaging side and said innersole having a longitudinal ridgesupported by the ridgevof the shank stiflener. 45

19. A reinforced shoe bottom unit. comprising an innersole, a-heel andshank-reinforcing piece completely covering the heel and a substantialportion of the shank portion' of the innersole, a shank stiflenerinterposed between said parts 50 and imparting a ridged formation tosaid innersole. and rows of staples securing together the lateralmarginal portions of the innersole and the reinforcing piece, saidstaples being spaced sub' stantlal distances inwardly from the lateraledges 55 of the reinforcing piece to preserve the ridged formation ofthe innersole.

20. A reinforced shoe bottom unit comprising an innersole, a heel andshank-reinforcing vpiece secured by adhesive to the innersole, and aribbed 60 shank stiifener interposed between said parts and imparting acorresponding ribbed contour to said innersole, and rows of staplesspaced substantial distances from the lateral edges of the reinforcingpiece securing the marginal portions of the 55 innersole and thereinforcing piece together along opposite edges of the shank stiffenerto maintain permanently the ribbed contour of said innersole.

21. A shoe comprising an innersole, a reinforcing member for the heeland shank portions oi' '(0 the innersole adhesively secured to theinnersole at the inner or `foot-engaging side of the latter,

va shank stiffener interposed between the reinforcing member and theinnersole, an upper having its margins lasted over` the innersole, anoutla,

reinforcing member and the innersole and secured to the reinforcingmember. an upper having its margins lasted over the innersole, anoutersole adhesiveiy secured to the overlasted upper margins, the shankportions of 'the reinforcing rmember, the innersole and the outersolebeing transversely concave at the sides directed toward the inside ofthe sh. and a rivet extending through the reinforcing member, the shankstiffener, the innersole, and the outersoie in the shank portion oi theshoe.

WALTER W. PRUE.

CERTIFICATE'OF CORRECTION.

Patent no. 2,075,025. March 9, 1957.

WALTER w.l PRUE.

I-t is hereby certifiedthat error appears in the printed specificationVvof the'above numbered patent requiring correction as follows: Page 5,vsecond column,l line 49, claim 19, after the article "a" insert ribbed;and that the said Letters Patent should be readwith this correctiontherein that the same may conform to the record of the case in thePatent Office.v

.Signed and sealed this 27th day oi`Apri-1, yA. D. 193'?.

(sul.)

VLeslie Frazer Acting Commissioner of Patents DI SOLAI M E R2,073,025.-Walter Prue,- Auburn, Maine. SHOE BOTTOM UNIT AND METHOD oFMAKING THE SAME.

Patent dated March 9, 1937. Disclaimer filed February 17, 1938, by theassignee, United Shoe Machinery Corporation.

Herel enters this disclaimer to claims 1, 2, 5,

l c'al Gazette March 15, 1.938.]

and 9 of said Letters Patent.

reinforcing member and the innersole and secured to the reinforcingmember. an upper having its margins lasted over the innersole, anoutersole adhesiveiy secured to the overlasted upper margins, the shankportions of 'the reinforcing rmember, the innersole and the outersolebeing transversely concave at the sides directed toward the inside ofthe sh. and a rivet extending through the reinforcing member, the shankstiffener, the innersole, and the outersoie in the shank portion oi theshoe.

WALTER W. PRUE.

CERTIFICATE'OF CORRECTION.

Patent no. 2,075,025. March 9, 1957.

WALTER w.l PRUE.

I-t is hereby certifiedthat error appears in the printed specificationVvof the'above numbered patent requiring correction as follows: Page 5,vsecond column,l line 49, claim 19, after the article "a" insert ribbed;and that the said Letters Patent should be readwith this correctiontherein that the same may conform to the record of the case in thePatent Office.v

.Signed and sealed this 27th day oi`Apri-1, yA. D. 193'?.

(sul.)

VLeslie Frazer Acting Commissioner of Patents DI SOLAI M E R2,073,025.-Walter Prue,- Auburn, Maine. SHOE BOTTOM UNIT AND METHOD oFMAKING THE SAME.

Patent dated March 9, 1937. Disclaimer filed February 17, 1938, by theassignee, United Shoe Machinery Corporation.

Herel enters this disclaimer to claims 1, 2, 5,

l c'al Gazette March 15, 1.938.]

and 9 of said Letters Patent.

